[downeaster59]

Android e-ink devices are pretty hard to find. Chinese companies like Boyue and Onyx are about the only ones who make them. I'm aware of the Earl, but they have had delays upon delays. The only ones I know of that have audio support only do so through a headphone jack. Your best options are either the Onyx Boox T68 and AfterGlow 2 (also known as the C67) and the Boyue T61 and T62. I have the T68 and T62. The T62 gives me the better battery life. I rooted it and installed SetCPU, and now my battery life is pretty close to my old Nook Simple Touch. The T68 isn't as good with battery life, but it has a 6.8 in display (the T62 has a 6 in display). The T62 is less expensive than the T68, but has more space for apps and data. You can use a microSD card with any of these devices. All have headphone jacks and TTS capability.

Your cheapest option may be to but the Onyx Boox C67 from Banggood. It goes for about $128 US, I believe. You will have to wait about three weeks, and you'll need to root your device if you want Google Play Store on it.

My recommendation? The Boyue T62. If you want a larger screen, try the Onyx T68.

Edit: You'll need to root the T62, too, if you want Play Store. Onyx devices come with Play Store installed. Still, the T62 is my favorite.